All of the above are adaptation protocols mostly based on protocols
already existing in the Signalling System nr7 networks(and no, this has nothing
to do with James Bond, 007). More detailed info about what SS7 is can be found
on this website. Specific
issues regarding SCTP for transporting signalling information can be found in
the Telephony signalling applicability Statement.
Other signalling protocols (like SIP) might use SCTP in adition to TCP and UDP.
See SIP WG.
The basic work on SCTP is done in the
Transport Area(TSV)WG
The following additions/enchancements to SCTP are currently being considered::

Ethereal: A graphical packet
analyzer with SCTP support running under Linux, FreeBSD, Solaris, ... and
Windows. Adaptation layers are also supported.

Faster than a speeding bullet. More powerful than a locomotive. Able to leap
tall buildings in a single bound ....Look! Up in the sky"??? NO...It's not a
bird or a plane or Superman
---Look out on the Net-- it's SCTP!